I spent some time with Project Apollo years ago and it is seriously hard core. However, the sense of accomplishment from successfully flying a mission in it is huge.
Unfortunately I've been out of the loop for a couple of years now, so I can't help you with the installation. In fact, maybe I need to revisit Orbiter and Project Apollo again.
"A week or even a month for someone basically saying "shucks, this is pants" maybe. But their banhammer only has the forever setting. Gotta set phasers to stun for the localization of female undergarments, not kill yo." - Frederf